15.7-15.14-Pressure

Question 1

What is atmospheric pressure?

Answer 1

The total weight of the air above

Question 2

If height is increased, what happens to atmospheric pressure?

Answer 2

Decreases

Question 3

What does the pressure of a gas depend on?

Answer 3

.Atmospheric pressure

Question 4

What would happen to the pressure of a gas inside a balloon?

Answer 4

.The air exerts an inward force on the outer surface of the balloon and if this force is greater than the outwards force exerted by the gas particles inside the balloon will collapse

Question 5

What does pressure in fluid cause?

Answer 5

A force normal to any surface

Question 6

How does pressure in liquids vary?

Answer 6

.Deeper in a fluid-The greater the pressure

.Denser the fluid-Greater the pressure

Question 7

Why does the pressure of a fluid increase with depth?

Answer 7

.Greater amount of fluid above the object, so greater weight, so greater force felt, so greater pressure

Question 8

Why does the pressure of a fluid increase with density?

Answer 8

.Mass =density x volume

.Greater density means greater weight of fluid on the object so greater force and pressure